hadoop/scripts/krb5.conf

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[logging]
default = FILE:/var/log/krb5libs.log
kdc = FILE:/var/log/krb5kdc.log
admin_server = FILE:/var/log/kadmind.log

[libdefaults]
 dns_canonicalize_hostname = false
 dns_lookup_realm = false
 ticket_lifetime = 24h
 renew_lifetime = 7d
 forwardable = true
 rdns = false
 default_realm = EXAMPLE.COM

[realms]
 EXAMPLE.COM = {
  kdc = SERVER
  admin_server = SERVER
 }

[domain_realm]
 .example.com = EXAMPLE.COM
 example.com = EXAMPLE.COM